A steel precise positioning laser cutting device

Abstract

A precision positioning laser cutting device for steel relates to the field of metal cutting and welding equipment manufacturing technology, such as plasma arc welding machines. It includes a cutting mode adjustment mechanism, a positioning clamping mechanism, and a laser welding mechanism. The cutting mode adjustment mechanism comprises a placement plate, a side base plate, a slide rail A, and a slider A. A short rod is provided on the side of the placement plate, slidably installed in a circular hole on the slider A. An extension plate is provided on the side of the slider A, with a circular hole on the extension plate slidably connected to the slide rail A. In use, this invention can perform diverse cutting of stainless steel, cutting along the axial direction of the stainless steel, and can cut with two blades. When cutting with two blades, the steel is held axially by controlling the clamping rod, ensuring the steel remains stable during the cutting process. Simultaneously, the change in cutting position caused by the cutting with two blades can also control the axial gap width of the placement plate to allow the laser beam to pass through it.

Description

Technical Field

[0001] This invention relates to the field of metal cutting and welding equipment manufacturing technology, such as plasma arc welding machines, and particularly to a laser cutting device for precise positioning of steel. Background Technology

[0002] Steel positioning laser cutting technology is an advanced processing mode that highly integrates high-precision positioning methods with cutting-edge laser cutting technology. During processing, thanks to an advanced positioning system, the specific position and orientation of the stainless steel material on the cutting platform can be quickly and accurately locked, ensuring the accuracy of the starting point, cutting direction, and cutting dimensions for subsequent cutting operations. At this point, a high-energy-density laser beam moves rapidly across the surface of the stainless steel material according to a pre-set program, achieving a high-precision, high-quality cutting effect.

[0003] Positioning laser cutting boasts exceptional dimensional and shape accuracy, producing narrow and uniform kerfs. This fully meets the stringent precision requirements of industries such as aerospace and precision instrument manufacturing, laying a solid foundation for the high-quality development of these sectors. In terms of processing efficiency, positioning laser cutting offers significant advantages. Compared to traditional mechanical cutting, which requires frequent tool changes and complex clamping adjustments, positioning laser cutting eliminates such cumbersome operations. Its extremely high cutting speed allows for the rapid completion of large-scale stainless steel cutting tasks, significantly shortening production cycles and improving enterprise production efficiency and responsiveness to market changes.

[0004] Furthermore, laser cutting for stainless steel positioning demonstrates excellent flexibility and adaptability; precise positioning and cutting operations maximize the utilization of stainless steel, effectively reducing scrap and thus lowering production costs, aligning with current concepts of green manufacturing and sustainable development. In conclusion, with its significant advantages of high precision, high efficiency, high flexibility, and low cost, laser cutting for stainless steel positioning has become an indispensable key processing technology in modern manufacturing, powerfully driving the sustainable development of various industries.

[0005] Existing laser cutting equipment for steel has limited cutting methods when cutting non-sheet stainless steel, mostly limited to radial cutting. When axial cutting or cutting only a portion of the steel is required, existing fixing and placement devices have significant difficulties in gap adjustment, making flexible adjustments challenging. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention discloses a precision positioning laser cutting device for steel, which effectively solves the problems in the background art. In use, this invention can perform diverse cutting on stainless steel, cutting along the axial direction of the stainless steel and cutting with two blades. When cutting with two blades, the steel is held axially by controlling the clamping rods to keep it stable during the cutting process. The change in cutting position caused by the two blades also allows control of the axial gap width of the placement plate to allow the laser beam to pass through the placement plate without damaging it. Simultaneously, this device can also cut stainless steel radially, again with two or more blades. The clamping rods can radially hold the steel stable, and the gap in the middle of the placement plate can also be adjusted to allow the laser to pass smoothly. This device can also perform grooving cutting, such as cutting a slit in the steel. In this case, the grooving in the middle of the placement plate can also create space for laser cutting, and the position of the steel can be adjusted under the control of the clamping rods.

[0007] A precision positioning laser cutting device for steel includes a cutting mode adjustment mechanism, a positioning clamping mechanism, and a laser welding mechanism. The cutting mode adjustment mechanism includes a placement plate, a side base plate, a slide rail A, and a slider A. A short rod is provided on the side of the placement plate, and the short rod is slidably installed in a circular hole on the slider A. An extension plate is provided on the side of the slider A, and the circular hole on the extension plate is slidably connected to the slide rail A. The two ends of the slide rail A are fixedly installed on the protruding plates on the side base plate.

[0008] Preferably, the placement plate consists of four parts. When assembled, it has an arc-shaped groove on the top to hold stainless steel materials, a radial gap in the middle, and two symmetrical large grooves on both sides, as well as a gap in the axial middle.

[0009] Preferably, the cutting mode adjustment mechanism further includes: a lever, a slider B, a small slider, an electric cylinder, a connecting rod, a lead screw A, and a stepper motor A; there are two levers, symmetrically installed, with the outer end of the lever rotatably mounted on a short shaft on the middle short rod on the side of the placement plate, and the inner end of the lever having a groove that is slidably connected to the two short shafts on the slider B. The two short shafts prevent the lever from rotating. The slider B is slidably mounted on a slide rod in the middle of the side base plate; the small slider is slidably mounted on the slide rod on the slider B, with one end of the connecting rod rotatably connected to the shaft on the small slider, and the other end of the connecting rod rotatably connected to the short shaft on the side extension plate of the lever; the cylinder body of the electric cylinder is fixedly mounted on the slider B, and the piston rod of the electric cylinder is fixedly connected to the small slider; both ends of the lead screw A are rotatably mounted in the round holes on the side base plate, and the lead screw A is also connected to the motor shaft of the stepper motor A, which is fixedly mounted in the middle of the side base plate. The lead screw A is also connected to a protruding thread at the lower end of the slider B.

[0010] Preferably, the positioning and clamping mechanism includes: a main support, a clamping rod, a bidirectional lead screw, a slide rail B, a rack frame, a stepper motor B, and a stepper motor C; the main support is fixedly connected to the lower end of the side base plate; the clamping rod has two round holes, which are slidably connected to the slide rail B, and the clamping rod is also threadedly connected to the bidirectional lead screw. The two ends of the bidirectional lead screw are rotatably installed in the round holes on the rack frame, and one end of the bidirectional lead screw is also connected to the motor shaft of the stepper motor B. The stepper motor B is fixedly installed at one end of the rack frame, and the two ends of the slide rail B are fixedly installed on the rack frame; a rack is also provided on the side of the rack frame, and the rack meshes with the motor gear of the stepper motor C.

[0011] Preferably, one end of the clamp is L-shaped.

[0012] Preferably, the positioning and clamping mechanism further includes: a crossbeam and a hydraulic cylinder; there are two crossbeams, and a sliding groove is provided on the bottom of the crossbeam, which is slidably connected to the main support. Sliding grooves are also provided on both sides of the crossbeam, which are slidably connected to the rack frame; an extension plate is provided at the middle position of the crossbeam, and the extension plate is fixedly connected to the piston rod of the hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixedly installed on the crossbar between the main supports.

[0013] Preferably, the laser welding mechanism includes: a right-angle frame, a lead screw B, a stepper motor D, a slider C, a lead screw C, a stepper motor E, and a laser cutting module; both ends of the lead screw B are rotatably installed in the round holes on the right-angle frame, the lead screw B is threadedly connected to the slider C, and one end of the lead screw B is also connected to the motor shaft of the stepper motor D, which is fixedly installed on the right-angle frame; the slider C is slidably installed on the slide groove on the right-angle frame, both ends of the lead screw C are rotatably installed in the round holes on the slider C, and the lead screw C is threadedly connected to the laser cutting module, wherein one end of the lead screw C is also connected to the motor shaft of the stepper motor E, which is fixedly installed on the slider C, and the laser cutting module is slidably installed on the slide groove on the slider C.

[0014] The beneficial effects of this invention compared with the prior art are: 1. When using this invention, it can perform diverse cutting of stainless steel, can cut along the axial direction of the stainless steel, and can cut with two blades. When cutting with two blades, the steel is held in place by controlling the axial clamping of the clamping rod, so that the steel remains stable when cutting with two blades. At the same time, the change in the cutting position caused by cutting with two blades can also control the axial gap width of the placement plate so that the laser beam can pass through the placement plate, thereby not causing damage to the placement plate. 2. At the same time, this device can also cut stainless steel radially, and can also cut with double or multiple blades. The clamping rod can hold the steel radially to keep it stable, and the gap in the middle of the placement plate can also be adjusted to allow the laser to pass through smoothly. 3. This device can also perform grooving and cutting, such as cutting a slit in steel. At this time, the slot in the middle of the placement plate can also create space for laser cutting, and the position of the steel can be adjusted under the control of the clamping rod. Attached Figure Description

[0015] Figure 1 This is an isometric view of the overall structure of the present invention.

[0016] Figure 2 This is a top view of the overall structure of the present invention.

[0017] Figure 3 This is a structural diagram showing the placement of the steel material according to the present invention.

[0018] Figure 4 This is a structural diagram of the placement plate of the present invention.

[0019] Figure 5 This is a first-view view of the cutting mode adjustment mechanism of the present invention.

[0020] Figure 6 This is a second-view view of the cutting mode adjustment mechanism of the present invention.

[0021] Figure 7 This is an overall structural diagram of the positioning and clamping mechanism of the present invention.

[0022] Figure 8 This is a partial structural diagram of the positioning and clamping mechanism of the present invention.

[0023] Figure 9 This is a structural diagram of the rack frame of the present invention.

[0024] Figure 10 This is a structural diagram of the laser welding mechanism of the present invention.

[0025] Reference numerals: 1. Placement plate; 2. Side base plate; 3. Slide rail A; 4. Slider A; 5. Toggle lever; 6. Slider B; 7. Small slider; 8. Electric cylinder; 9. Connecting rod; 10. Lead screw A; 11. Stepper motor A; 12. Main support; 13. Clamping rod; 14. Bidirectional lead screw; 15. Slide rail B; 16. Rack and pinion frame; 17. Stepper motor B; 18. Stepper motor C; 19. Crossbeam; 20. Hydraulic cylinder; 21. Right angle frame; 22. Lead screw B; 23. Stepper motor D; 24. Slider C; 25. Lead screw C; 26. Stepper motor E; 27. Laser cutting module. Detailed Implementation

[0026] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] In the description of this invention, it should be noted that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are merely simplified descriptions for ease of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, for ease of description, spatial relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the accompanying drawings. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatial relative descriptive terms used herein can be interpreted accordingly.

[0028] Implementation, for example Figures 1-10 As shown, a precision positioning laser cutting device for steel includes a cutting mode adjustment mechanism, a positioning clamping mechanism, and a laser welding mechanism. In one optional embodiment of the present invention, such as Figure 3 , Figure 4 , Figure 5 As shown, the cutting mode adjustment mechanism includes: a placement plate 1, a side base plate 2, a slide rail A3, and a slider A4; a short rod is provided on the side of the placement plate 1, and the short rod is slidably installed in the round hole on the slider A4; an extension plate is provided on the side of the slider A4, and the round hole on the extension plate is slidably connected to the slide rail A3; the two ends of the slide rail A3 are fixedly installed on the protruding plates on the side base plate 2.

[0029] In one optional embodiment of the present invention, such as Figure 4 As shown, the placement plate 1 consists of four parts. When assembled, it has an arc-shaped groove on the top, which can hold stainless steel materials. There is a gap in the radial middle and two large symmetrical grooves on both sides, and there is also a gap in the axial middle.

[0030] In one optional embodiment of the present invention, such as Figure 5 , Figure 6As shown, the cutting mode adjustment mechanism also includes: lever 5, slider B6, small slider 7, electric cylinder 8, connecting rod 9, lead screw A10, and stepper motor A11; there are two levers 5, symmetrically installed. The outer end of lever 5 is rotatably mounted on a short shaft on the middle short rod on the side of the placement plate 1. The inner end of lever 5 has a groove, which is slidably connected to the two short shafts on slider B6. The function of the two short shafts is to prevent lever 5 from rotating. Slider B6 is slidably mounted on a slide rod in the middle of the side base plate 2; small slider 7 is slidably mounted on slider B6. On the slide bar, one end of the connecting rod 9 is rotatably connected to the shaft on the small slider 7, and the other end of the connecting rod 9 is rotatably connected to the short shaft on the side extension plate of the lever 5. The cylinder body of the electric cylinder 8 is fixedly installed on the slider B6, and the piston rod of the electric cylinder 8 is fixedly connected to the small slider 7. The two ends of the lead screw A10 are rotatably installed in the round holes on the side base plate 2. The lead screw A10 is also connected to the motor shaft of the stepper motor A11. The stepper motor A11 is fixedly installed in the middle of the side base plate 2. At the same time, the lead screw A10 is also connected to the protruding thread provided at the lower end of the slider B6.

[0031] In one optional embodiment of the present invention, such as Figure 7 , Figure 8 , Figure 9 As shown, the positioning and clamping mechanism includes: a main support 12, a clamping rod 13, a bidirectional lead screw 14, a slide rail B15, a rack frame 16, a stepper motor B17, and a stepper motor C18; the main support 12 is fixedly connected to the lower end of the side base plate 2; the clamping rod 13 has two round holes, which are slidably connected to the slide rail B15, and the clamping rod 13 is also threadedly connected to the bidirectional lead screw 14. The two ends of the bidirectional lead screw 14 are rotatably installed in the round holes on the rack frame 16, and one end of the bidirectional lead screw 14 is also connected to the motor shaft of the stepper motor B17. The stepper motor B17 is fixedly installed at one end of the rack frame 16, and the two ends of the slide rail B15 are fixedly installed on the rack frame 16; a rack is also provided on the side of the rack frame 16, and the rack meshes with the motor gear of the stepper motor C18.

[0032] In one optional embodiment of the present invention, such as Figure 8 As shown, one end of the clamp 13 is L-shaped.

[0033] In one optional embodiment of the present invention, such as Figure 7 , Figure 8 As shown, the positioning and clamping mechanism also includes: a crossbeam 19 and a hydraulic cylinder 20; there are two crossbeams 19, and a sliding groove is provided on the bottom of the crossbeam 19, which is slidably connected to the main support 12. Sliding grooves are also provided on both sides of the crossbeam 19, which are slidably connected to the rack frame 16; an extension plate is provided at the middle position of the crossbeam 19, and the extension plate is fixedly connected to the piston rod of the hydraulic cylinder 20. The cylinder body of the hydraulic cylinder 20 is fixedly installed on the crossbar between the main supports 12.

[0034] In one optional embodiment of the present invention, such as Figure 10 As shown, the laser welding mechanism includes: a right-angle bracket 21, a lead screw B22, a stepper motor D23, a slider C24, a lead screw C25, a stepper motor E26, and a laser cutting module 27. Both ends of the lead screw B22 are rotatably mounted in the circular holes on the right-angle bracket 21. The lead screw B22 is threadedly connected to the slider C24, and one end of the lead screw B22 is also connected to the motor shaft of the stepper motor D23. The stepper motor D23 is fixedly mounted on the right-angle bracket 21. The slider C24 is slidably mounted on the slide groove on the right-angle bracket 21. Both ends of the lead screw C25 are rotatably mounted in the circular holes on the slider C24. Simultaneously, the lead screw C25 is threadedly connected to the laser cutting module 27, and one end of the lead screw C25 is also connected to the motor shaft of the stepper motor E26. The stepper motor E26 is fixedly mounted on the slider C24, and the laser cutting module 27 is slidably mounted on the slide groove on the slider C24.

[0035] Working Principle: This invention enables diverse cutting of stainless steel. It can cut along the axial direction of the stainless steel and can cut with two blades. When cutting with two blades, the steel is held axially by the clamping rod 13, ensuring stability during the cutting process. The change in cutting position caused by the two blades also allows control of the axial gap width of the placement plate 1, enabling the laser beam to pass through without damaging the plate. Simultaneously, this device can also cut stainless steel radially, again with two or more blades. The clamping rod 13 radially holds the steel stable, and the gap in the middle of the placement plate 1 can be adjusted to allow the laser to pass smoothly. This device can also perform grooving cuts, such as cutting a slit in the steel. In this case, the grooving in the middle of the placement plate 1 provides space for laser cutting, and the position of the steel can be adjusted under the control of the clamping rod 13.

[0036] In actual use, the device involved in this invention requires following a series of standardized and orderly operating steps to complete the steel cutting task. First, the steel to be cut is placed stably on the placement plate 1 to ensure that the position of the steel on the placement plate is accurate and stable, thus laying the foundation for subsequent cutting work.

[0037] After the steel is placed, the laser cutting method needs to be determined based on the specific cutting requirements. This device is powerful and can perform various cutting operations on steel. Specifically, it can perform axial cutting, that is, cutting along the length of the steel; it can also perform radial cutting, that is, cutting perpendicular to the length of the steel; in addition, it can precisely remove specific portions of the steel.

[0038] When axial cutting of the steel is required, stepper motor B17 starts, and the rotation of its output shaft drives the connected bidirectional lead screw 14 to rotate. During rotation, the bidirectional lead screw 14 interacts with the mating parts on the two clamping rods 13 through its special bidirectional thread structure, causing both clamping rods 13 to move towards the center. As the clamping rods 13 move, they gradually approach the steel, eventually clamping the stainless steel tightly. When clamping the steel, the clamping rods 13 choose to clamp the two side planes of the steel. This is done to leave sufficient space for laser cutting in the middle of the steel, ensuring that the laser beam can pass smoothly and cut the steel.

[0039] Furthermore, depending on the different cutting requirements during the actual cutting process, this device can precisely control the axial gap of the placement plate 1. The specific control process is as follows: Stepper motor A11 starts, and its power output drives lead screw A10 to rotate. The rotation of lead screw A10 causes the threaded slider B6 to move, sliding outward along a specific track. A lever 5 is provided on slider B6; as slider B6 moves, lever 5 also moves, causing placement plate 1 to slide outward. Through this sliding method, the size of the gap in the middle of placement plate 1 changes, thereby meeting the requirement for smooth laser passage under different cutting numbers.

[0040] After adjusting the gap in the placement plate 1, the cutting path needs to be further determined. At this point, stepper motor D23 starts, driving lead screw B22 to rotate. The rotation of lead screw B22 causes the connected slider C24 to slide along the track, and the sliding trajectory of slider C24 forms the cutting path. Subsequently, laser cutting module 27 starts working, generating a high-energy laser beam to axially cut the steel according to the pre-set path. If double-blade cutting is required, stepper motor E26 starts, driving lead screw C25 to rotate. The rotation of lead screw C25 causes the connected laser cutting module 27 to slide left and right. This sliding allows for precise adjustment of the cutting offset, thus achieving the requirements of double-blade cutting.

[0041] When radial cutting of steel is required, the laser cutting module 27 must first be moved to the radial gap of the placement plate 1 and placed in a ready-to-cut state. If a double-blade or multi-blade cutting method is required during the cutting process, the radial gap of the placement plate 1 also needs to be adjusted to ensure that the laser beam can pass through the gap smoothly to cut the steel. The specific adjustment process is as follows: the electric cylinder 8 is activated, and the extension and retraction of its piston rod drives the small slider 7 to slide inward. During the sliding process, the small slider 7 drives the lever 5 to slide outward through the connecting rod 9 connected to it. The movement of the lever 5 further drives the two sides of the placement plate 1 to slide outward, thereby increasing the radial gap to meet the requirements for the laser beam to pass through during multi-blade cutting.

[0042] Simultaneously, the way the clamping rod 13 holds the steel also changes. The hydraulic cylinder 20 is activated, and the extension and retraction of its piston rod causes the crossbeam 19 to slide inward. The sliding of the crossbeam 19 causes the connected rack frame 16 to also slide inward. The sliding of the rack frame 16, through a cooperating transmission mechanism, drives the clamping rod 13 to move, thereby clamping the curved surface of the steel. This clamping method, combined with the radial cutting method, ensures the stability of the steel during the radial cutting process.

[0043] When it is necessary to cut a specific part of the steel, the clamping method of the clamping rod 13 can be either axial cutting or radial cutting, as described above. Because when cutting a specific part, only a portion of the steel needs to be removed; the entire piece can still be clamped as a whole, and this clamping method will not adversely affect the cutting process. After the clamping rod 13 firmly clamps the steel, the stepper motor C18 starts, driving the rack frame 16 to slide. The sliding of the rack frame 16 drives the two clamping rods 13 to slide as a whole through the connected transmission mechanism. The sliding of the clamping rods 13 changes the position of the clamped steel, moving the area to be cut to the slotted position on the placement plate 1. In this way, the laser beam can smoothly pass through the placement plate 1 during the cutting process, completing the cutting task of the specified part of the steel.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting device for precise positioning of steel, characterized in that, It includes a cutting mode adjustment mechanism, a positioning clamping mechanism, and a laser welding mechanism; the cutting mode adjustment mechanism includes: a placement plate (1), a side bottom plate (2), a slide rail A (3), and a slider A (4); the side of the placement plate (1) is provided with a short rod, which is slidably installed in the round hole on the slider A (4); the side of the slider A (4) is provided with an extension plate, and the round hole on the extension plate is slidably connected to the slide rail A (3); the two ends of the slide rail A (3) are fixedly installed on the protruding plate on the side bottom plate (2).

2. The steel precision positioning laser cutting device according to claim 1, characterized in that, The placement plate (1) consists of four parts. After assembly, it has an arc-shaped groove on the top, which can hold stainless steel. There is a gap in the radial middle and two large symmetrical grooves on both sides, and there is also a gap in the axial middle.

3. The steel precision positioning laser cutting device according to claim 2, characterized in that, The cutting mode adjustment mechanism further includes: lever (5), slider B (6), small slider (7), electric cylinder (8), connecting rod (9), lead screw A (10), and stepper motor A (11); there are two levers (5), which are installed symmetrically. The outer end of the lever (5) is rotatably mounted on the short shaft on the middle short rod on the side of the placement plate (1). The inner end of the lever (5) is provided with a groove, which is slidably connected to the two short shafts on the slider B (6). The slider B (6) is slidably mounted on the slide rod in the middle of the side bottom plate (2); the small slider (7) is slidably mounted on the slide rod on the slider B (6), and the connecting rod (9) One end of the connecting rod (9) is rotatably connected to the shaft on the small slider (7), and the other end of the connecting rod (9) is rotatably connected to the short shaft on the side extension plate of the lever (5). The cylinder body of the electric cylinder (8) is fixedly installed on the slider B (6), and the piston rod of the electric cylinder (8) is fixedly connected to the small slider (7). The two ends of the lead screw A (10) are rotatably installed in the round hole on the side base plate (2). The lead screw A (10) is also connected to the motor shaft of the stepper motor A (11). The stepper motor A (11) is fixedly installed in the middle of the side base plate (2). At the same time, the lead screw A (10) is also connected to the protruding thread provided at the lower end of the slider B (6).

4. The steel precision positioning laser cutting device according to claim 3, characterized in that, The positioning and clamping mechanism includes: a main support (12), a clamping rod (13), a bidirectional lead screw (14), a slide rail B (15), a rack frame (16), a stepper motor B (17), and a stepper motor C (18); the main support (12) is fixedly connected to the lower end of the side base plate (2); the clamping rod (13) is provided with two round holes, which are slidably connected to the slide rail B (15), and the clamping rod (13) is also threadedly connected to the bidirectional lead screw (14). The two ends of the bidirectional lead screw (14) are rotatably installed in the round holes on the rack frame (16), and one end of the bidirectional lead screw (14) is also connected to the motor shaft of the stepper motor B (17). The stepper motor B (17) is fixedly installed at one end of the rack frame (16), and the two ends of the slide rail B (15) are fixedly installed on the rack frame (16); a rack is also provided on the side of the rack frame (16), and the rack meshes with the motor gear of the stepper motor C (18).

5. The steel precision positioning laser cutting device according to claim 4, characterized in that, One end of the clamp (13) is L-shaped.

6. The steel precision positioning laser cutting device according to claim 4, characterized in that, The positioning and clamping mechanism further includes: a crossbeam (19) and a hydraulic cylinder (20); there are two crossbeams (19), and a sliding groove is provided on the bottom of the crossbeam (19). The sliding groove is slidably connected to the main support (12). Sliding grooves are also provided on both sides of the crossbeam (19). This sliding groove is slidably connected to the rack frame (16); an extension plate is provided at the middle position of the crossbeam (19). The extension plate is fixedly connected to the piston rod of the hydraulic cylinder (20). The cylinder body of the hydraulic cylinder (20) is fixedly installed on the crossbar between the main supports (12).

7. The steel precision positioning laser cutting device according to claim 6, characterized in that, The laser welding mechanism includes: a right-angle bracket (21), a lead screw B (22), a stepper motor D (23), a slider C (24), a lead screw C (25), a stepper motor E (26), and a laser cutting module (27); both ends of the lead screw B (22) are rotatably installed in the round holes on the right-angle bracket (21), the lead screw B (22) is threadedly connected to the slider C (24), and one end of the lead screw B (22) is also connected to the motor shaft of the stepper motor D (23), the stepper motor D (23) is fixedly installed on the right-angle bracket (21). On the right-angle bracket (21); the slider C (24) is slidably mounted on the groove on the right-angle bracket (21), and the two ends of the lead screw C (25) are rotatably mounted in the round hole on the slider C (24). At the same time, the lead screw C (25) is threadedly connected to the laser cutting module (27). One end of the lead screw C (25) is also connected to the motor shaft of the stepper motor E (26). The stepper motor E (26) is fixedly mounted on the slider C (24), and the laser cutting module (27) is slidably mounted on the groove on the slider C (24).

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